Bridge for traveling cranes.



s. BUCKLEY.

BRIDGE FOR TRAVELING GRANES, APPLICATION FILEDVYJUNE 2. 19l7- RENEWED JAN. 7. 1919.

3 SHEETS-SHEET l- //V VE IV 70/? M/ZZ A ORNEV S. BUCKLEY.

BRIDGE FOR TRAVELING CRANES. APPLICATIQNEILEDJUNELI917- RENEWED JAN- 1. 1919.

1,296,759. Patentd Mar. 1 1..1919

A ran/w S. BUCKLEY.

BMDGE FOR TRAVELiNG CRANES. v APPUCATION HLED JUNE 2, 191;. RENEWED JAN. 7, 1919.

EJ396359. v Patented Mar. 11.1919.

3 SHEETS-SHEET 3 srnrns PATENT OFFICE.

P SYDNEY BUGKLEY, OF PHILADELPHIA, PENN SYLVANIA, ASSIGNOR TO NILES-BEMENT POND COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

BRIDGE FOR TRAVELING GRANES.

Specification of Letters Patent. Patented Mar. 11, 1919..

Application filed June 2, 1917, Serial No. 172,426. Renewed January 7 1919. Serial No. 270,061.

To all whom it may concern Be it known that I, SYDNEY BUCKLEY, a

citizen of the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Bridges for Traveling Cranes, of which the following is a specification, reference being had therein to the accompanying drawings. a

The invention relates more particularly to traveling cranes of the class in which'each comprises a movable bridge having two parallel separated elements respectively carrying rails. A hoisting mechanism is provided which consists of a trolley movable along the rails on the bridge and depending load engaging elements which usually extend between the two elements of the bridge.

The invention relates especially to the bridge elements of cranes of the type speci I tied, and a construction embodying my pres In the accompanying drawings I have illustrated the embodiment of the invention which I now deem preferable, but it will be understood that the construction shown is intended to be merely illustrative and is wnot intended to define or limitthe scope of the invention. Particularly it will be understood that the forms of the girders,

the shapes of the structural sectionsused, the means for connecting the several girders together and'the various structural details can be varied widely in accordance with the requirements of any particular case or in accordance with the preferences of the designer.

Of the drawings:

Figure 1 is a side elevation of a crane embodying the invention, some of the parts to which the invention does not directly relate being omitted.

Fig. 2 is a transverse vertical sectional View, the part at the left being taken along the line 22 of Fig. 3 and the part at the Figs. 1 and 2, it will be observed that I' have shown a crane comprising a traveling bridge which is carried at its ends on trucks which travel along rails 1, 1 supported on suitable elevated structures 2, 2. The bridge is made up of two longitudinal elements arranged with a space between them. The two elements are connected at the ends by suitable transverse members 3 as shown in Fig. 2. Preferably there is provided a separate two-wheeled truck element 4 for each end of each bridge element.

For the purpose of moving the craneas' a whole along the rails 1, 1, one or more truck wheels at each end of the bridge are connected with a suitable driving motor.

As illustrated, one of the truck wheels at each end is connected with a gear wheel 5 which meshes with a pinion 6 on a shaft 7 which extends longitudinally from one end of the bridge to the other. A motor 8 is provided for rotating theshaft 7, thus serv ing to move the bridge in one direction or the other as required.

Supported on each of the said lOngitudinal bridge elements is a rail 9. A suitable trolley or hoisting mechanism is provided which is supported on the rails 9, 9, and is adapted to travel along them. The hoisting mechanism as a whole is represented in the drawings by 10, but as this hoisting mechanism of itself constitutes no part of the present invention, detailed description thereof can be omitted. It is sufficient to point out that the hoisting mechanism is provided with a suitable load-engaging device such as the hook 11 which is suspended by a cable or cables 12, passing throu h the space between the two longitudinal e ements of the bridge. By means of a motor 13 the rope can be wound upon or unwound from a drum 14, thus causing the hook with its load to be raised or lowered. I

There is a suitable cage 15 which is provided with space for an operator and with suitable controlling devices whereby the movements of the bridge and of the hoisting mechanism can bestarted, stopped and controlled as required.

The present invention relates primarily to the construction of the two main side elements of the bridge, and as these elements are similar to each other it will be sufiicient to describe but one of them in detail. In the drawings many of the structural details are omitted or are incompletely shown, as these constitute no part of the invention and can be varied as desired.

In the construction presented in my aforesaid application Serial No. 149,180, each side element of the bridge comprises two separated main girders and a supplemental railcarrying girder located between the main girders. In the said construction the load is transmitted from the central rail-carrying girder to the upper longitudinal elements of the main girders by means of transverse cone necting members in the form of beams. The present construction differs primarily from the aforesaid construction in the provision isra simple rolled section such as anI-beam,

and to provide main girders which are built up of separate rolled metal parts forming upper and lower compression and tension members and diagonal truss members.

. In the construction shown, the upper 1011:.

. gi udinal member of eachgirder comprises angle bars 19 and 20 and a plate 21 between the bars. Similarly the'lower longitudinal member of each girder comprises two angle bars 22 and 23' and a plate 241between the bars; The upper and lower longitudinal members are connected by diagonal truss members 25 and 26 which are shown as being in the form of angle bars. The longitudinal Copies of this patent may be obtained for members of the main girders are connected at their ends to suitable end structures 27, 27

The two girders are connected together and spaced by means of suitable transverse members such as the angle bars28, 28 at the top and 29, 29 at the bottom. There are also provided diagonal braces 30 and 31 at the top and 32 and 33 at the bottom.

For supporting the rail-carrying girder or beam 18 I provide a plurality of diagonal struts 34 and 35 arranged in pairs, the struts of each pair engaging the beam 18 at the top and at the bottom respectively engaging the longitudinal members of the main girders 16 and 17. Preferably I provide a pair of struts at each plane where two diagonal members 26 and25 join the lower longitudinal members. Preferably I also provide other pairs of struts at the planes where the diagonal members 25 and 26 join the upper.

upper longitudinal members down to the lower longitudinal members.

It will be seen that by this construction I have provided a simple means for trans mitting the load from the rail-carrying gird- I ers to the main girders.

What I claim is: g

1. A traveling crane bridge element consisting oftwo individually complete main girders each comprlsing an upper l0ngitu-.

dinal compression member, a lower longitu dinal tension member and diagonal truss members, a rail-carrying girder between the main girders at or near the level of the upper members of the main girder, and means for supporting the rail-carrying girder directly from the lower members of the main girder.

2. A traveling crane bridge element consisting of two individually complete main girders each comprising an upper longitud nal compression member, a lower longitudinal tension member and diagonal truss members, a rail-carrying girder between the 7 main girders at or nearth e leVel of the upper members of the" main girder, and diagonal supports extending to the rail-carrying member from the lower-member of each main, girder. 7 r y y In testimony whereof, I hereto afiiX my signature. V V

SYDNEY BUOKLEY.

five cents each, by'addressing the Commissioner of Patents. Washington, D. C. i V 

